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| NTE1248 Integrated Circuit Phase Lock Loop (PLL) FM Multiplex Stereo Demod Description: The NTE1248 is a phase lock loop (PLL) system monolithic integrated circuit in a 16-Lead DIP type package designed as an FM multiplex stereo demodulator. Features: D A PLL for High Multiplex-Efficiency Operation. D Stable Operation at Low Voltages (VCC = 5.4V Min) D Low Lamp Lighting Level (6.5mV typ) D Separation Control Pin (Pin8) D Ability to Stop the VCO for Monaural Muting (Pin9) D Output Voltage Available with Low Loss (GV = -1dB typically) D Typically 0.3% Distortion D SCA Rejection Ratio (80dB) Applications: D Stereo Radio Cassette Tape Recorders D Car Stereos D Home Stereos Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14V Lamp Indicator Current, ILAMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75mA Power Dissipation, Pd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 550mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -25 to +75C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +125C Electrical Characteristics: (TA = +25C, VCC = 12V, VIN = 350mV, L + R = 90%, Pilot = 10%, f = 1kHz unless otherwise specified) Parameter Input Voltage Input Impedance Channel Separation Output Voltage Channel Balance Total Harmonic Distortion Lamp Voltage Hysteresis Capture Range Carrier Leak SCA Rejection Ratio Threshold Voltage Supply Voltage Quiescent Current Symbol VIN1 VIN2 Zin Sep VOUT CB THD Lon Hys CR CL f = 19kHz f = 38kHz SCA-R L + R = 80%, P = 10%, SCA = 10% VTH VCC IQ Pin Connection Diagram Test Conditions THD = 1%, L + R = 90%, P = 10% THD = 1% Min 350 350 - 35 Typ - - 30 40 310 - 0.3 6.5 3 5 35 45 80 1 - 15 Max - - - - - 2 - - - - - - - - 14 - Unit mV mV k dB - dB % mV dB % dB dB dB V V mA VIN = 350mV - - - Pilot Level - - - - - - - 5.4 - VCC 1 Demodulate FM Input 2 Demodulate FM Input 3 Lt Audio Output 4 Rt Audio Output 5 Stereo Indicator Lamp 6 GND 7 Separation Control 8 16 VCO Frequency Control 15 Phase Det Output to VCO 14 Phase Det Output to VCO 13 Phase Det Input 12 19kHZ Test Point 11 Phase Det Output to Switch 10 Phase Det Output to Switch 9 IF Muting Circuit 16 9 1 8 .870 (22.0) Max .260 (6.6) Max .200 (5.08) Max .100 (2.54) .700 (17.78) .099 (2.5) Min |
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